12 Days of Christmas
            1,514th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    617th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            24 Game
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    277th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            99 Bottles of Beer
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,012th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Abundant Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    667th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Abundant Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    852nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Arabic to Roman
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,046th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Arithmetic Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    761st
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Arrows
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    596th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Ascending Primes
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    258th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            ASCII Table
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,082nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    782nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Billiards
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    269th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            brainfuck
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,096th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    361st
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Card Number Validation
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    239th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Catalan Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,042nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Catalan’s Constant
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    372nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Christmas Trees
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    608th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Collatz
            1,775th
                        
                    1,760th2,844th
                        
                    
                        
                    
                        
                    724th1,397th2,130th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    11th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,053rd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            CSS Colors
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    806th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Cubes
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    674th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Day of Week
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,070th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Diamonds
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    528th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Divisors
            4,659th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,604th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Emirp Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,418th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Emirp Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    714th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Emojify
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    477th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Evil Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,924th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Evil Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,953rd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,303rd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Factorial Factorisation
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    184th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Farey Sequence
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    859th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Fibonacci
            2,877th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    3,408th4,616th5,057th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    206th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    3,045th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Fizz Buzz
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    129th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Foo Fizz Buzz Bar
            2,339th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Fractions
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    882nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Gijswijt’s Sequence
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    450th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Happy Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,187th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Happy Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    981st
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Intersection
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    531st
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Inventory Sequence
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    682nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            ISBN
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    352nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Kolakoski Constant
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,337th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Kolakoski Sequence
            1,050th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Leap Years
            3,339th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    42nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Levenshtein Distance
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    526th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Leyland Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,536th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            ln 2
            256th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    125th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Look and Say
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    268th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Lucky Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    638th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Mandelbrot
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    152nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Morse Encoder
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    502nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            N Queens
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    777th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Niven Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    108th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Niven Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    988th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Number Spiral
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,220th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Odious Numbers
            3,376th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,678th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Odious Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,168th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Ordinal Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    233rd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Pangram Grep
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,760th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Partition Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    429th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Pascal’s Triangle
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    928th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Pernicious Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,857th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Pernicious Numbers (Long)
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,114th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Prime Numbers
            1,546th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    2,924th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    880th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    1,154th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Prime Numbers (Long)
            1,234th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    733rd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Quine
            25th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    2,105th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Recamán
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    177th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Repeating Decimals
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    309th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Reverse Polish Notation
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    529th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Reversi
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    164th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Rijndael S-box
            245th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    566th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    176th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Roman to Arabic
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    928th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            ROT13
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    315th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Rule 110
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    353rd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            SI Units
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    207th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Sierpiński Triangle
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    780th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Smith Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    649th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Spelling Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    182nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Tic-tac-toe
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    39th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Time Distance
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    419th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Tongue-twisters
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    369th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Topological Sort
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    175th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Transpose Sentence
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    396th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            United States
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    622nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Vampire Numbers
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    401st
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Van Eck Sequence
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    914th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            Zodiac Signs
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    240th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            γ
            259th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            λ
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    998th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    578th
                        
                    
                        
                    
        
            π
            635th3,472nd2,727th2,572nd2,065th2,459th2,835th2,410th2,415th2,111th2,951st3,256th3,625th3,163rd2,762nd2,618th3,251st2,971st3,514th1,975th2,847th1,805th3,712th3,007th3,759th2,020th2,176th459th3,739th
                        
                    2,302nd1,889th1,681st1,638th3,798th2,687th3,452nd3,410th3,012th2,494th3,568th1,582nd705th1,790th827th1,537th1,847th2,795th1,377th2,253rd1,936th2,187th
                        
                    
        
            τ
            582nd
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    470th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            φ
            729th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    334th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            √2
            
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    337th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    697th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
        
            𝑒
            746th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    166th
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    
                        
                    752nd